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Basic building blocks of digital multimeter are _________

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Basic building blocks of digital multimeter are _________

(a) oscillator, amplifier

(b) diode, op amp

(c) rectifier, schmitt trigger

(d) A/D, attenuator, counter

I had been asked this question in homework.

The doubt is from Digital Multimeter in section Electronic Instruments of Electrical Measurements

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The correct option is (d) A/D, attenuator, counter

Explanation: Usually dual slope integrating type ADC is preferred in multimeter. It basically consists of several A/D converters, counter circuits and an attenuation circuit.

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